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Chaceon quinquedens, commonly known as the red deep-sea crab, [2] but sold as Atlantic deep sea red crab, or simply Atlantic red crab or red crab, is a crab that lives in the Atlantic Ocean off the East Coast of the United States and Canada, from North Carolina to Nova Scotia, [3] [4] and in the Gulf of Mexico.
Red crabs grow slowly, reaching sexual maturity at around 4–5 years, at which point they begin participating in the annual migration. [9] During their early growth phases, red crabs will moult several times. Mature red crabs will moult once a year, usually in the safety of their burrow. Their lifespan is about 12 years. [11]
Red crabs have only been commercially fished for about 30 years, so little is known about their biology and reproduction. The National Marine Fisheries Service has deemed them a data-poor stock.
This is a difficult process that takes many hours, and if a crab gets stuck, it will die. After freeing itself from the old shell (now called an exuvia), the crab is extremely soft and hides until its new shell has hardened. While the new shell is still soft, the crab can expand it to make room for future growth. [17]: 78–79
Red crab may refer to: Red king crab (Paralithodes camtschaticus) Christmas Island red crab (Gecarcoidea natalis) Chaceon quinquedens, also known as the "deep-sea red crab" Pleuroncodes planipes, a squat lobster also known as the "pelagic red crab" Dungeness crab (Metacarcinus magister
The red king crab is the most coveted of the commercially sold king crab species, and it is the most expensive per unit weight. It is most commonly caught in the Bering Sea and Norton Sound , Alaska, and is particularly difficult to catch, but is nonetheless one of the most preferred crabs for consumption.
Grapsus grapsus is a typically shaped crab, with five pairs of legs, the front two bearing small, blocky, symmetrical chelae (claws). The other legs are broad and flat, with only the tips touching the substrate. The crab's round, flat carapace is slightly longer than 8 centimetres (3.1 in).
The red reef hermit crab is a scavenger, feeding on animal and vegetable detritus. The sexes are separate in this species and it breeds throughout the year. The eggs are orange and hatch into planktonic larvae. When these settle on the seabed, the juvenile hermit crabs need to search for a suitable shell to occupy.